Email Verifier (SMTP, MX, Catch-All) MCP Server

by sumitrmardy Your server? Claim it

answering

Email Verifier (SMTP, MX, Catch-All) is answering right now. Last checked 12 min ago. Last commit 17 Oct 2026.

Bulk email verification: live SMTP mailbox check, MX, catch-all, disposable and role detection.

Uptime history 4 days of history

4 days agonow

100.0%

Uptime 24h

91 of 91 checks

—

Tools

hidden behind auth

343 ms

Response time

average over 24h

Stars

last commit 17 Oct 2026

Nothing serious here today

Today is the operative word: we check Email Verifier (SMTP, MX, Catch-All) every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 12 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add email-verifier --transport http 'https://mcp.apify.com/?tools=sumitr_mardy/email-verifier'

Settings → Connectors → Add custom connector, then paste this address

https://mcp.apify.com/?tools=sumitr_mardy/email-verifier

~/.codex/config.toml

[mcp_servers.email-verifier]
url = "https://mcp.apify.com/?tools=sumitr_mardy/email-verifier"

.cursor/mcp.json

{
  "mcpServers": {
    "email-verifier": {
      "url": "https://mcp.apify.com/?tools=sumitr_mardy/email-verifier"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "email-verifier": {
      "type": "http",
      "url": "https://mcp.apify.com/?tools=sumitr_mardy/email-verifier"
    }
  }
}

This endpoint answered with an authorization challenge. The server is running, but you need an API key from its owner to call it.

Endpoints

URL	Transport	State	Latency	Checked
https://mcp.apify.com/?tools=sumitr_mardy/email-verifier	streamable-http	needs key	335 ms	12 min ago

Alternatives to Email Verifier (SMTP, MX, Catch-All)

same job, measured the same way

MailValid Email Verification

by mailvalid

Verify emails: syntax, MX, SMTP mailbox, disposable, role and catch-all checks. Single and bulk.

6 tools answering

Checkmails — Email Verification

by checkmails

Verify email deliverability by SMTP. Catch-all/disposable/role detection. EU-hosted, GDPR-ready.

answering

Bulk Email Verifier & Validator

by monietools

Check emails for valid syntax, MX records, disposable and role addresses and typos. No SMTP check.

answering

MailFerret

by appin60-mailferret

Find and verify work emails with live SMTP checks and catch-all detection. Free 10 calls/day.

3 tools answering

Emaillistchecker.io Email Verification

by emaillistchecker

Verify emails (valid/invalid/risky/unknown): MX, SMTP, catch-all, disposable. Free agent key.

9 tools answering

Email Verifier MCP

by panstories

Verify email deliverability with RFC format, MX, SMTP and disposable-domain checks.

answering

Email List Validation Email Verification

by emaillistvalidation

Verify emails (valid/invalid/risky/unknown): MX, SMTP, catch-all, disposable. Free agent key.

9 tools answering

MailTester Email Verification

by mailtester

Verify emails (valid/invalid/risky/unknown): MX, SMTP, catch-all, disposable. Free agent key.

9 tools answering

Email Verifier (SMTP, MX, Catch-All) — questions

Answers built from our own checks of this server.

Why is there no tool list for Email Verifier (SMTP, MX, Catch-All)?

The server answered our handshake with an authorization challenge, so it is running — but it will not describe its tools to an anonymous client. To see them you need to connect with your own credentials. We record it as alive, not as broken: 100.0% of checks in the last 24 hours got a reply.

Is Email Verifier (SMTP, MX, Catch-All) working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 343 ms. The bar chart above shows every period we have measured.

How do I connect Email Verifier (SMTP, MX, Catch-All)?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address. You will need your own key: it refuses anonymous clients.

Does Email Verifier (SMTP, MX, Catch-All) need an API key?

Yes. Every time we knock, Email Verifier (SMTP, MX, Catch-All) answers with an authorization challenge instead of its tool list — that is how we know it is running and gated rather than broken. Bring your own credentials and it will talk.

How fast is Email Verifier (SMTP, MX, Catch-All)?

It answers our handshake in 343 ms on average, which is faster than 41% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is Email Verifier (SMTP, MX, Catch-All) open source?

The code is open source: it is published under the MIT licence, written in JavaScript, 0 stars on GitHub and 1 open issue. The licence covers the code in the repository, not the hosted service at mcp.apify.com, which runs on its operator's own terms.